The difference that matters
The Panasonic PT-VMZ7ST is brighter (7,000 lumens against 6,000). The Optoma ZK608TST throws a given image from closer (ratio 0.58 against 0.797). The Optoma ZK608TST lists higher resolution (4K UHD).
Side by side
| Specification | Optoma ZK608TST | Panasonic PT-VMZ7ST |
|---|---|---|
| Brightness | 6,000 lm | 7,000 lm |
| Resolution | 4K UHD (3840 × 2160) | WUXGA (1920 × 1200) |
| Native aspect | 16:9 | 16:10 |
| Throw ratio | 0.58:1 | 0.797–1.01:1 |
| Distance for a 10.5 × 8 ft 4:3 screen | 8′ 1″ | 10′ 1″ |
| Brightness on that screen | 54 fL | 69 fL |
| Light source | Laser | Laser |
| Rated life | 30,000 h | 20,000 h |
| Zoom | — | 1.2× optical |
| Lens shift | Vertical −106% to +116%; horizontal ±4% | Horizontal and vertical |
| Input lag | — | — |
| Price seen | $6,859 | $6,819 |
Highlighted rows differ. Figures come from each product's sources; room depth, distances and brightness are FOREference calculations using the same method for both.
Which should you choose?
Optoma ZK608TST
Choose the Optoma ZK608TST if you need to mount it close to the screen or image detail matters most.
Panasonic PT-VMZ7ST
Choose the Panasonic PT-VMZ7ST if your room has ambient light or a large screen.
Before you buy either
- Check the room: room size calculator and ceiling height calculator.
- Confirm what each seller includes — accessories, software trials and bundles change often.
- Read the limitations on each full reference page.
FOREference compares published specifications; we have not tested these products side by side. How we work · Disclosure